org.jgap
Class ReproductionOperator

java.lang.Object
  org.jgap.ReproductionOperator

Direct Known Subclasses:

CloneReproductionOperator, CrossoverReproductionOperator, DummyReproductionOperator

public abstract class ReproductionOperator
extends java.lang.Object

Abstract class for reproduction operators. Handles intra-species breeding and someday will handle inter-species breeding. Each specie gets a number of offspring relative to its fitness, following NEAT paradigm.

Author:

Philip Tucker

Constructor Summary

ReproductionOperator()

Method Summary

float	getSlice()
protected abstract void	reproduce(Configuration config, java.util.List parents, int numOffspring, java.util.List offspring)
void	reproduce(Configuration config, java.util.List parentSpecies, java.util.List offspring) The reproduce method will be invoked on each of the reproduction operators referenced by the current Configuration object during the evolution phase.
void	setSlice(float aSlice)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReproductionOperator

public ReproductionOperator()

Method Detail

reproduce

public final void reproduce(Configuration config,
                            java.util.List parentSpecies,
                            java.util.List offspring)
                     throws InvalidConfigurationException

The reproduce method will be invoked on each of the reproduction operators referenced by the current Configuration object during the evolution phase. Operators are given an opportunity to run in the order they are added to the Configuration. Iterates over species and determines each one's number of offspring based on fitness, then passes control to subclass reproduce( final Configuration config, final List parents, int numOffspring, List offspring ) method to perform specific reproduction.

Parameters:

config - The current active genetic configuration.

parentSpecies - List contains Specie objects containing parent chromosomes from which to produce offspring.

offspring - List contains offspring ChromosomeMaterial objects; this method adds new offspring to this list

Throws:

InvalidConfigurationException

See Also:

reproduce(Configuration, List, int, List)

reproduce

protected abstract void reproduce(Configuration config,
                                  java.util.List parents,
                                  int numOffspring,
                                  java.util.List offspring)
                           throws InvalidConfigurationException

Parameters:

config -

parents - List contains chromosome objects

numOffspring - # Chromosomes to return in List

offspring - List contains ChromosomeMaterial objects

Throws:

InvalidConfigurationException

See Also:

reproduce(Configuration, List, List)

getSlice

public final float getSlice()

Returns:

float slice of population this reproduction operator will fill with offspring

setSlice

public final void setSlice(float aSlice)

Parameters:

aSlice - slice of population this reproduction operator will fill with offspring